Temperature-regulator.



H. SANDVOSS.

TEMPERATURE REGULATOR.

APPLICATION FILED BS4124, 1907.

Patented Sept. 21, 1909.

L y ii 7:21 c I I I? K wrchwrj /g MM! W) HEEMAHN SANDVOSS, 0F DUSSELDORF, GERMANY.

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Specification of Letters Patent. Patanteqll Sept. 21, Ilgflg.

Application filed December 24, 1907. Serial No. 407,902.

To all whom it may concern:

Be it known that I, HERMANN SANnvoss, a citizen of Germany, residing at Dusseldorf, Germany, have invented new and useful Improvements in Temperature-Regulators, of which the following is a specification.

This invention relates to an improved temperature regulator which is so constructed that the flow of the heating medium is automatically regulated in a simple and effective manner.

In the accompanying drawing: Figure 1 is an elevation, partly in section, of my improved temperature regulator; Fig. 2 an enlarged longitudinal section through part thereof, and Fig. 3 a similar section through a modification.

The letter a, indicates a coupling interposed between the heat supply, (not shown), and the heat radiator, (not shown) the heating mdium entering through muff a, and escaping through muff a To coupling a, is secured, by nut 5 an upright tube 12, containing at its top a perforated plug 6 Plug 5 is tap ed into a perforated coupling 72, provided with an upper annular recess or groove 11., forming a central neck 01 Within recess a, is seated an upright pipe or cylinder 6 communicating near its upper end through heads c, and 0 with a cluster of tubes 0, surrounding pipe 6 Through the central perforation of plug 6 and coupling n, extends a spindle 6, provided at its top with a head d, of less diameterthan the bore of pipe 1). Head 03, and neck 12?, are connected by a flexible tube or hose m, which incloses a spring 0, interposed between head and neck. Tubes 0, heads 0', c and the space between hose m, and tube 5 are filled with mercury or other substance adapted to contract and expand with the fall and rise pf the temperature. Spindle e, rests with its foot upon a stem 7", provided at its bottom with a valve g, which controls the flow of the heating medium through coupling a. To the upper end of stem f, is secured a collar h, provided with a peri heral groove 72.. Collar h, and the upper redhced neck 5 of nut 5 are connected by a flexible tube or hose j, inclosing a spring 2', interposed between collar ]t, and nut 6 said spring serving to hold stem f, in permanent engagement with s indie e. Groove h, is en aged by the tai k, of a pointer is, passing t rough a lateral opening I), of pipe 6. Pointer is, playing upon a dial-Z, is pivoted at .41 to a collar 6, adjustably mounted upon pipe b, and adapted to be clamped thereto by set screw Z It will be seen that with the rise of the temperature, the mercury contained in the upper part of the apparatus will expand, thereby depressing plunger (1, against the action of spring 0. This downward movement of plunger d, is, by spindle e, and stem f transmitted to valve g, which is thus partly closed to reduce the supply of the heating medium, while pointer is, simultaneously registers the temperature upon dial Z.' A lowering of the temperature will cause a contraction of the mercury, thus permitting spring 0, to partly raise plunger d, and spindle e, which upward movement will be followed by stem f, so that valve g, is opened and pointer k, is set correspondingly.

In the modification shown inFig. 3, there is provided within the upper end of-tube 6*, an additional plunger p, of less diameter than the width of tube 72 This plunger is, by hose a, connected to head 0 aspring 0, being interposed between plunger and head. Plunger p, is by spindle 9, connected to a collar 1", provided with a peripheral groove,

1", wh ch is engaged by the tail of a resilient pointel; s, which is adapted to engage recesses z, of a dial t.

It will be seen that by setting pointer s, to different temperatures, plunger p, will be either projected into or retracted from tube 5, which movement is, by the mercury, transmitted to plunger d. It is thus possible to limit the upward movement of valve 9,- to any desired point, by correspondingly setting plunger 29, so that the heat radiated from the heater, (not shown), may also be limited to any desired maximum temperature.

p I claim:

1. A temperature regulator, comprising a valve, a stem secured thereto, a tube inclosing the stem, a plug carried by the 'tube and having a neck, a cylinder secured to the plug, a headed spindle movable within the cylinder and engaging the stem, an expansible liquid within the cylinder, and a flexible hose between the neck and spindle head, such hose inclosing the spindle-and excluding the liquid therefrom.

2. A temperature regulator, comprising a cylinder, means for setting said plunger, and valve, a springinfluenced stem secured an expansible liquid Within the cylinder. 10 thereto, a tube inclosing the stem, a plug se- Signed by me at Dusseldorf, Germany, cured to the tube and having a neck, a cylthis 11th day of December 1907.

inder secured to the plug, a headed spindle HERMANN SANDVOSS.

movable in the cylinder and engaging the Witnesses: stem, a flexible hose connecting the neck and WILHELM FLASOHE, spindle head, a plunger projecting into the CLEMENT HEOKMANN. 

